Subcasing or inner-tire protector for pneumatic tires.



1. N. DAVIS. SUBCASING 0R INNER TIRE PROTECTOR FOR PNEUMATIC TIRES.

APPLICATION FILED MAY 22. I916.

Patented Dec. 11, 1917.

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1T Ell"; @AYIEE, BENVER, COLOEAEBG.

T0 aZZ whom iii/e31 some Be it known that I, JASPER citizen of the United. States of siding at the city and county oi Denver and State of Colorado, have invented a new and useful linproyeinent in Subcasing or lnner- Tire Protectors r Pneumatic Tires, oi which. he following, is a specification.

This invention relates to improvements in sub-easing or inner tire protectors for pneumatic tires.

The object of the invention is:

First, to provide an inner tire protector for use in old tires, vitli means to llOltl it in position without creeping.

Second, to provide an inner tire protecting means will hold any character oi? blowout, I

Third, provide an inner tire protector made of number of layers of soft flexible material, with metal anchoring hooks securecl along its edges, which are adapted to engage the inner surface of the solid head portion of a tire in which it is placed, and having a rubber covering vulcanized or otherwise secured outer surface.

These objects aoccniplishefi hy the (3011a!) JCtlOP. illustrated in the accompanying N. DAVIS, a

clrai ings, in which:

Figure 3.,1s vertical, sectional V18W 05: a

portion of e. tire provider} with the improved inner tire protector eteil broken away tov show the CODSiLLlUCtlGn and relative positions of the tire, the protector, the inner tube and anchoring hool Fig. 2, is a transverse, sectional View of Fig. l.

-SPSCLlV8 View, showings tire, the inner tube, and the anchoring hooks, which the outer tire, the inner protector tire being so illuses to show the layers of fabric coinposing the same, the inner tube osing also shown.

e plan View of a blank from FT r a I winch an anchor plate is termed.

.c .elge view of the anchor plate,

cly to be attached ugliout the several views 0 Five. 1, E1) anal 3, numeral 1 {lesignn'es the t or miter casing, 2 the inner tube, and 8 the layers a; ot the oetween the e 3., encl the inner protector, which come inner tube and the outer W.

Specification of Letters ratent.

.mnl'leetion filed may 22, 19.26.

America, re-

Fatenterl flee. fill, fierial Ito. 99,110.

rubber covering or rubber trearl of the pro teeter. The protector is macle up of any number of: layers of suitable material, as cotton fabric, the same as tires are niecle cit.

Referring to Fig. 3, the protector as shown, has four layers, the inner layer which surrounds the tube 2 being the longet in cross section. One edge 5 layer is in advance oi the next layer, ancl the eclge 6 of this layer overlaps the eclge as shown. for the purpose of giving the protector anti bulging strength, but is for the purpose of preventing the inner tube from lyi Wheel rim, the rust of which is injnriens the tube. The remaining layers from the inner layer to the outer layer, progres- 'SlVQly shorter in cross section, thereby to reduce the thickness oi the terminal edges of the inner tire, as will he understootl lay reterenee to Figs. 2 and 3. The inner tire is cured to the outer tire, by anchor pl 7 having anchoring hooks 8. The an hook 8, as shownin 8, extencls throw the outer layer of the'inner tire, e

hooks are eclapteel to enter soi of the tire, near the edge of ti shown in Fig.2. it is not essential hooks should enter the tire at t point, but they may enter any face of the hearl.

new on the in Fig. 1, the outer layer of fabric broken away to show two of the anchor plates 7, from which the hooks 8 project, and are an integral part thereof. The metal anchor plates 7' are stnripecl from. sheet steel, and are of the form shown Fig. 4. They are then formed to the $5 ape as shown in before they are sec. 7 to the inner tire prot ctor as illustrated. in Figs 1, 2, and 3. The oolrs 8 extend from i the lower edge of the plate ".1, and. from the upper edge thereof extend. hooks 9, which.

of the inner This overlapping edge" not or through them, and if desired clamped on another side, as shown in Fig. 2, which enables the prongs to hold the said plates more firmly to the fabric. The plates 7 lie between the two outer layers of fabric, the object of this arrangement being to prevent the metal plates from lying against the outer tire; another reason being that the plates are held more secure to the said inner tire by reason of the outer layer of fabric overlapping the plates and the anchoring hooks 7, which'hooks project through said layer, which laps over and is vulcanized to the remaining layers.

As above explained, the prongs 9 do not pierce through the inner layer, the said layer preventing the metal prongs 9 from coming in contact with the inner tube. The protector as described, may be also called a subcasing, because it embodies all the requirements of a complete outer tire, the only difference being the addition of more layers of fabric, and a heavy rubber tread.

Having described my invention, what I claim as new, and desire to secure by LettersPatent, is

1. The combination with an inner endless protector for pneumatic tires, of an endless row of plates on opposite sides of said protector, having integral prongs which connect them with said protector, and integral prongs which are adapted to be embedded in the bead portion of the tire. f

2.-The combination with a tire having an inflatable inner tube, of an inner endless protector interposed between said tire and tube, and an endless row of plates on opposlte sides of said protector, having integral prongs adapted to engage said protector,

and outwardly bent prongs adapted to be embedded in the bead portion of said tire by the pressure of said inner tube when the same is inflated.

3. The combination with a tire having an inflatable inner tube, of an inner endless protector interposed between said tire and tube, having an endless row of plates inclosed in opposite sides of said protector provided with integral prongs which (an gage said protector, and outwardly extend ing integral prongs adapted to be embedded in the bead portion of said tire, when the inner tube is inflated.

4. The combination with a tire having an inflatable inner tube, of an inner endless protector interposed between said tire and tube, and an endless row of plates on opposite sides of said protector having apertures therein, and integral prongs which pass through said protector and are. bent down and around and again passed through said protector so that their points enter said apertures, and outwardly bent integral prongs adapted to be embedded in the head portion of said tire by the pressure of said inner tube when the same is inflated.

In testimony whereof, I aflix my signature in the presence of two witnesses.

JASPER N. DAVIS.

Witnesses MARY E. DAVIS, IDA 1L1 DAvIs. 

